CFD Simulation of Flutter (Tacoma Bridge) (Be patient! Flutter happens quite slowly)

This is 2D CFD simulation of the flutter phenomenon of Tacoma Narrow Bridge 1940 (TNB). If you are impatient, please go to the end of this video directly. TNB is famous for its sad collapse due to its H type configuration which has a very poor aerodynamic performance. You will see from the simulation how flutter happens almost suddenly. All the parameters are chosen as those are in real world. Please keep in mind, that this is just an effort to simulate the aeroelastic instability in free vibration, no grid convergence, no turb modeling etc. have been investigated so far. However the blockage ratio is small enough (1%), and the solver is ready to extend to parallel, 3D LES based simulations.